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IPv6 prefix delegation with AVPair ipv6:delegated-prefix

Dear all

I have a LNS running c7200-adventerprisek9-mz.124-24.T4.bin.

I am trying to delegate IPv6 prefixes to vpdn users as described in

http://www.cisco.com/en/US/customer/prod/collateral/iosswrel/ps6537/ps6553/whitepaper_c11-602131.html#wp9000270

From this whitepaper: "When the delegating provider edge router supports  RFC 4818, only one user profile is stored for the RADIUS server. In  addition the RADIUS server may be configured with a DNS server per user,  which overwrites the providers edge router's default DNS server address  configured in the DHCP pool"

Our Freeradius has the following user entry according to the mentioned whitepaper:

user@foobar Auth-Type = Local, Password == "foo"

   Service-Type = Framed-User,

   Framed-Protocol = "PPP",

   Framed-IP-Address = "10.0.0.1",

   Framed-IP-Netmask = "255.255.255.255",

   Framed-MTU = "1492",

   Framed-Compression = "Van-Jacobson-TCP-IP",

   Cisco-AVPair = "ipv6:prefix#1=201:DB8:F1:0::/64",

   Cisco-AVPair += "ipv6:delegated-prefix=201:DB8:AAAA::/48",

   Cisco-AVPair += "lcp:interface-config=mtu 1460"

If I try to connect this user I get the PPP-Link established with prefix 201:DB8:F1:0::/64 as expected. But instead of providing the delegated prefix from the AVPair the router queries the radius server again for the user user@foobar-dhcpv6pd which I have not configured since I assume that this router "supports RFC 4818", right?
So why does it as for user@foobar-dhcpv6pd ?
Thanks for any hint,
Grischa

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Cisco Employee

Re: IPv6 prefix delegation with AVPair ipv6:delegated-prefix

Hi,

RFC4818 is supported starting with 15.1(1)T or later. 151-2.T2a seems to have an issue though.

HTH

Laurent.

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